Changes to Retrieve task

the response property code became required for the status 200

the response property content became required for the status 200

the response property detail became required for the status 200

the response property expires_at became required for the status 200

the response property id became required for the status 200

the response property result_url became required for the status 200

the response property status became required for the status 200

the response property type became required for the status 200

the response property url became required for the status 200